<head>
    <meta charset="UTF-8">
    <title>form标签-表单</title>
</head>
<body>
<h1>form标签</h1>
<form action="https://www.w3cschool.cn/statics/demosource/demo-form.php">
    <label>
        <input type="text" name="FirstName" required="required" placeholder="请输入你的名字" />
    </label>
    <button type="submit">提交</button>
</form>
</body>